The genus Grandala contains one bird of remarkable structure, the position of which it is somewhat difficult to determine. It is placed by Seebohm among the Thrushes, and by Jerdon among the Saxicolinae, and I place it here in an intermediate position, considering it more allied to the Robins than to the Thrushes or Chats. The proper position of this species may probably be among the Brachypteryginae.
The plumage of the nestling of this species is streaked, and so far it resembles that of the adult female ; but the streaks are more numerous and less distinctly defined, giving it a decided, though not typical, Thrush-like appearance.
In Grandala the bill is about half the length of the head and slender; the nasal membrane is clothed with plumelets to its middle portion, and the rictal bristles are rather long; the wing is excessively long, the first primary very minute, and the second reaching to the tip of the wing ; the tail is rather longer than half the wing and square ; the tarsus is slender and smooth and fairly long. The sexes are coloured differently, and the plumage is soft and copious.
Only one species of this genus is known. Seebohm unites it with Sialia, a genus of American birds, with which, however, it has, in my opinion, no affinities.